Evolution of Precursory Seismic Quiescence of the Mw-6.8 Nam Ma Earthquake, Thailand-Myanmar Borders
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Abstract
We analyzed the evolution of the seismicity pattern related with the Nam Ma earthquake (Mw = 6.8) by using the statistical seismology method RTL (Region–Time–Length) algorithm to the seismicity data of the International Seismological Centre (ISC), recorded during 1969 - 2014. With using appropriate characteristic RTL parameter r0 = 90 km, t0 = 1.5 year and the minimum number of event (n) = 30, the retrospective assessment of RTL algorithm along Thailand-Laos-Myanmar borders have implied that the seismicity pattern changes before the main shock of earthquake. To illustrate clearly the evolution of seismicity pattern, the spatial distribution map were sliced by the time interval every 0.25 year before and after the Nam Ma earthquake. Following the quiescence stage, the anomalous area appeared corresponding to the epicenter of an earthquake. Hence, considering the seismic quiescence as precursory seismicity may provide beneficial information for understanding the process of strong earthquakes and evaluating the hazard or risk alarm.
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Copyright © 2008 Department of Geology, Faculty of Science, Chulalongkorn University. Parts of an article can be photocopied or reproduced without prior written permission from the author(s), but due acknowledgments should be stated or cited accordingly.
References
Ben-Zion, Y., Lyakhovsky, V., 2002. Accelerated seismic release and related aspects of seismicity patterns on earthquake faults. Pure and Applied Geophysics; 159, 2385–2412.
Chen, C., Wu, Y., 2006. An improved region-time-length algorithm applied to the 1999 Chi-Chi, Taiwan earthquake. Geophysical Journal International; 166, 144-147.
Gambino, S., Laudani, L., Magiagle, S., 2014. Seismicity Pattern Changes before the M = 4.8 Aeolian Archipelago (Italy) Earthquake of August 16, 2010. The Scientific World Journal Volume 2014; 531212.
Gardner, J.K., Knopoff, L., 1974. Is the sequence of earthquakes in Southern California, with aftershocks removed, Poissonian?. Bulletin of the Seismological Society of America; 64(1), 363–367.
Gutenberg, B., Richter, C.F., 1944. Frequency of earthquakes in California. Bulletin of the Seismological Society of America; 34, 185-188.
Habermann, R.E., 1983. Teleseismic detection in the Aleutian Island Arc. Journal of Geophysical Research; 88, 5056-5064.
Habermann, R.E., 1987. Man-made changes of seismicity rates. Bulletin of the Seismological Society of America; 77, 141–159.
Holliday, J.R., Rundle, J.B., Tiampo, K.F., Klein, W., Donnellan, A., 2006a. Systematic procedural and sensitivity analysis of the Pattern Informatics method for forecasting large MN5 earthquake events in southern California. Pure and Applied Geophysics; 10.1007/s00024-006-0131-1.
Huang, Q., Sobolev, G.A., Nagao, T., 2001. Characteristics of the seismic quiescence and activation patterns before the M=7.2 Kobe earthquake, January 17, 1995. Tectonophysics; 337(1-2), 99-116.
Huang, Q., Sobolev, G.A., 2002. Precursory seismicity changes associated with the Nemuro Peninsula earthquake, January 28, 2000. Journal of Asian Earth Sciences; 21(2), 135–146.
Huang, Q., 2004. Seismicity Pattern Changes Prior to Large Earthquakes – An Approach of the RTL algorithm. TAO; 15(3), 469-491.
Jiang, H.K., Hou, H.F., Zhou H.P., Zhou, C.Y., 2004. Region-time-length algorithm and its application to the study of intermediate-short term earthquake precursor in North China. Acta Seismologica Sinica; 17(2), 164-176.
Katsumata, K., 2011. A long-term seismic quiescence started 23 years before the 2011 off the Pacific coast of Tohoku Earthquake (M = 9.0). Earth Planets Space; 63, 709 – 712.
Mignan, A., Giovambattista R. D., 2008. Relationship between accelerating seismicity and quiescence, two precursors to large earthquakes. Geophysical Research Letters; 35, 10.1029/2008GL035024.
Pailoplee, S., Channarong, P., Chutakosikanon, V., 2013. Earthquake Activities in the Thailand-Laos-Myanmar borders: A Statistical Approach. Terrestrial Atmospheric and Oceanic Sciences; 24(4), 721-730.
Pailoplee, S., Surakiatchai, P., Charusiri, P., 2013. b-value Anomalies along the Northern Segment of SumatraAndaman Subduction Zone: Implication for the Upcoming Earthquakes. Journal of Earthquake and Tsunami; 7(3), 1350030-1-8.
Shashidhar, D., Kumar, N., Mallika, K., Gupta, H., 2010. Characteristics of seismicity patterns prior to the M~5 earthquakes in the Koyna Region, Western India – application of the RTL algorithm. Episodes; 33, 83 - 89.
Sobolev, G.A., Tyupkin, Y.S., 1997. Lowseismicity precursors of large earthquakes in Kamchatka. Volcanology and Seismology; 18, 433-446.
Sobolev, G.A., Tyupkin, Y.S., 1999. Precursory phases, seismicity precursors, and earthquake prediction in Kamchatka. Volcanology and Seismology; 20, 615-627.
Tiampo, K. R., Shcherbakov, R., 2012. Seismicity-based earthquake forecasting techniques: Ten years of progress. Tectonophysics; 522, 89–121.
Wells, D.L., Coppersmith, K.J., 1994. Updated empirical relationships among magnitude, rupture length, rupture area, and surface displacement. Bulletin of the Seismological Society of America; 84, 974-1002.
Wiemer, S., Wyss, M., 1994. Seismic quiescence before the Landers M=7.5 and Big Bear M=6.5 1992 earthquakes. Bulletin of the Seismological Society of America; 84, 900-916.
Woessner, J., Wiemer S., 2005. Assessing the Quality of Earthquake Catalogues: Estimating the Magnitude of Completeness and Its Uncertainty. Bulletin of the Seismological Society of America; 95(2), 684–698.
Wyss, M., 1991, Reporting history of the central Aleutians seismograph network and the quiescence preceding the 1986 Andreanof Island earthquake. Bulletin of the Seismological Society of America, 81, 1231–1254.
Yin, X.C., Chen, X.Z., Song, Z.P., Yin, C., 1995. A new approach to earthquake prediction: the Load/Unload Response Ratio (LURR) theory. Pure and Applied Geophysics; 145, 701–715.
Zuniga, F.R., Wiemer, S., 1999, Seismicity patterns: are they always related to natural causes?. Pageoph; 155, 713-726.